<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
	#dog{
		width: 260px;
		height: 260px;
		position: absolute;
		top: 50px;
		left: 0px;
	}
</style>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript">
	$(function(){
		// $('#dog').animate({'width':'500px','height':'500px','left':'300px'},2000)
		// 让图片变大变小
		$('#dog').animate({'width':'500px','height':'500px'},2000,function(){
			$('#dog').animate({'width':'260px','height':'260px'}, 1000);
		})

	})
</script>
</head>

<body>

<img src="dog.jpg" id="dog" />




</body>
</html>
